As you know, Miniclip games are free to play, but you can buy in-game currency to progress faster. In-game currency is purchased with real money using either Google or iTunes.
To set restrictions on your device to avoid accidental purchases by friends, family or minors please refer to the following pages:
If you’d like to continue making in-app purchases, set the device to require your password every time you make a purchase (select “Immediately”) or every fifteen minutes.
We hope this information proves useful!